Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a67c1479f7e5b7f…

MALICIOUS

PDF

40.8 KB Created: 2020-08-15 01:07:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 676f1b38e9b58e67af2037a2aef64b9f SHA-1: ae68281dab2f0a4b539d8ccffdd9bb23369b43fa SHA-256: 3a67c1479f7e5b7f3e4c8831feebe587bdd20b98a123befec8186e25a6cfcf26
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) known for malicious activity. The document body, though heavily obfuscated, contains the same malicious URL. This suggests a link farm or redirection attack designed to lead users to potentially harmful content.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=logotherapy+worksheets+pdf
    • http://files.conservationsupport.net/uploads/1/3/0/8/130874435/6c77b0e.pdf
    • http://xujijini.artemisassessment.ca/uploads/1/3/1/4/131453574/0c6f80e37d4d3bb.pdf
    • http://gapal.houseofcare.org/uploads/1/3/0/9/130969352/441122.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/5298701574.pdf
    • https://cdn.shopify.com/s/files/1/0437/8873/0525/files/56132177417.pdf
    • https://cdn.shopify.com/s/files/1/0437/0399/2474/files/jidofibug.pdf
    • https://cdn.shopify.com/s/files/1/0435/8006/3903/files/age_of_empires_3_cheats_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/the_centauri_device.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/80804151078.pdf
    • https://cdn.shopify.com/s/files/1/0431/2278/6466/files/kilipuberozalijadunalox.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/loi_sur_l_amnagement_durable_du_territoire_forestier.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18842325712.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/sojisiji.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sasukeseduvemuledup.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/80334760252.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060b8.bin
8dd1bc5d323175dab8205b1530a0d362d28ce665f5783b2820bf6ffd3af10e32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B8 5468 bytes
font_01_sfnt_off00007367.bin
49f7b76e321c3437d519929c9907ebccbbfdf8b0e0f09bd8fed6e63ee945f1c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7367 10140 bytes

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